From 8b1a1e23bf5040be5e637ffce080a86e0863db56 Mon Sep 17 00:00:00 2001
From: Colin <colin@nixc.us>
Date: Sun, 30 Nov 2025 16:40:29 -0500
Subject: [PATCH] Fix Puppeteer Chrome launch in Alpine Linux Docker

- Install Chromium and required system libraries (nss, freetype, harfbuzz, etc.)
- Set PUPPETEER_SKIP_CHROMIUM_DOWNLOAD to use system Chromium
- Add additional Chrome args for better compatibility in container
- Configure package.json to skip Chromium download
- Fixes 'Failed to launch the browser process' error
---
 docker/resume/Dockerfile       | 18 ++++++++++++++++--
 docker/resume/generate-pdfs.js | 13 ++++++++++++-
 docker/resume/package.json     |  3 +++
 3 files changed, 31 insertions(+), 3 deletions(-)

diff --git a/docker/resume/Dockerfile b/docker/resume/Dockerfile
index 53c75e3..ab7abce 100644
--- a/docker/resume/Dockerfile
+++ b/docker/resume/Dockerfile
@@ -1,7 +1,21 @@
 FROM caddy:2.7-alpine
 
-# Install dependencies
-RUN apk add --no-cache nodejs npm bash
+# Install dependencies including Chromium and required libraries for Puppeteer
+RUN apk add --no-cache \
+    nodejs \
+    npm \
+    bash \
+    chromium \
+    nss \
+    freetype \
+    freetype-dev \
+    harfbuzz \
+    ca-certificates \
+    ttf-freefont
+
+# Set Puppeteer to use system Chromium
+ENV PUPPETEER_SKIP_CHROMIUM_DOWNLOAD=true
+ENV PUPPETEER_EXECUTABLE_PATH=/usr/bin/chromium-browser
 
 # Set working directory
 WORKDIR /srv
diff --git a/docker/resume/generate-pdfs.js b/docker/resume/generate-pdfs.js
index b97261c..b3acf67 100644
--- a/docker/resume/generate-pdfs.js
+++ b/docker/resume/generate-pdfs.js
@@ -174,9 +174,20 @@ async function main() {
     console.log(`Local server started on port ${PORT}\n`);
     
     // Launch browser
+    // Use system Chromium if available (in Docker), otherwise use Puppeteer's bundled Chrome
     const browser = await puppeteer.launch({
         headless: 'new',
-        args: ['--no-sandbox', '--disable-setuid-sandbox']
+        executablePath: process.env.PUPPETEER_EXECUTABLE_PATH || undefined,
+        args: [
+            '--no-sandbox',
+            '--disable-setuid-sandbox',
+            '--disable-dev-shm-usage',
+            '--disable-accelerated-2d-canvas',
+            '--no-first-run',
+            '--no-zygote',
+            '--single-process',
+            '--disable-gpu'
+        ]
     });
     
     try {
diff --git a/docker/resume/package.json b/docker/resume/package.json
index 759fbf3..09b9d6b 100644
--- a/docker/resume/package.json
+++ b/docker/resume/package.json
@@ -12,5 +12,8 @@
   "description": "",
   "dependencies": {
     "puppeteer": "^21.0.0"
+  },
+  "puppeteer": {
+    "skipChromiumDownload": true
   }
 }